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The given system of an equation can be solved by using various method such as elimination, substitution, by graphing, trial and error methods.
Here we will use elimination method to solve the given system of an equation.
Note: here we have equal coefficient with same sign for x and opposite sign for y. Hence it can be solve either by addition or subtraction.
Adding equation 1 and 2, we get
Now divide both side by 2, we get
Plug the value of x= 6 in equation 1, we get
Subtract 6 on both side, we get
Divide each side by 2, we get
Therefore, the final answer is
To check the answer, plug